Alleviation of drought stress damages by melatonin and associated with adjusting photosynthetic efficiency, antioxidative system, and anatomical structure of (L.).

These experiments were performed to study the effect of exogenous treatment with melatonin at 100 μM and seed treatment with (10 CFU/cm) on growth, physio-biochemical characters, antioxidant enzymes, and anatomical features of soybean plants cv. Giza 111 under drought conditions. The findings showed that leaves number, nodules number, branches number, relative water content (RWC), chlorophyll content, and maximum quantum efficiency of PSII (Fv/Fm) were significantly reduced in soybean under drought stress.